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https://github.com/trezor/trezor-firmware.git
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bootloader/vendorheader: vtrust is bitmap not scalar
This commit is contained in:
Pavol Rusnak
parent
e40c436b82
commit
3636a5f1b1
4
Makefile
4
Makefile
@ -165,11 +165,11 @@ gdb_firmware: $(FIRMWARE_BUILD_DIR)/firmware.elf ## start remote gdb session to
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## misc commands:
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vendorheader: ## construct and sign the default vendor header
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./tools/build_vendorheader e28a8970753332bd72fef413e6b0b2ef1b4aadda7aa2c141f233712a6876b351:d4eec1869fb1b8a4e817516ad5a931557cb56805c3eb16e8f3a803d647df7869:772c8a442b7db06e166cfbc1ccbcbcde6f3eba76a4e98ef3ffc519502237d6ef 2 0.0 50 DEVELOPMENT assets/vendor_devel.toif embed/firmware/vendorheader.bin
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./tools/build_vendorheader e28a8970753332bd72fef413e6b0b2ef1b4aadda7aa2c141f233712a6876b351:d4eec1869fb1b8a4e817516ad5a931557cb56805c3eb16e8f3a803d647df7869:772c8a442b7db06e166cfbc1ccbcbcde6f3eba76a4e98ef3ffc519502237d6ef 2 0.0 65534 DEVELOPMENT assets/vendor_devel.toif embed/firmware/vendorheader.bin
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./tools/binctl embed/firmware/vendorheader.bin -s 1:2 `./tools/combine_sign vendorheader embed/firmware/vendorheader.bin 4444444444444444444444444444444444444444444444444444444444444444 4545454545454545454545454545454545454545454545454545454545454545`
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vendorheader_sl: ## construct SatoshiLabs vendor header
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./tools/build_vendorheader 47fbdc84d8abef44fe6abde8f87b6ead821b7082ec63b9f7cc33dc53bf6c708d:03fdd9a9c3911652d5effca4540d96ed92d85850a47d256ab0a2d728c0d1a298:2218c25f8ba70c82eba8ed6a321df209c0a7643d014f33bf9317846f62923830 2 0.0 80 SatoshiLabs assets/vendor_satoshilabs.toif embed/firmware/vendorheader_sl.bin
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./tools/build_vendorheader 47fbdc84d8abef44fe6abde8f87b6ead821b7082ec63b9f7cc33dc53bf6c708d:03fdd9a9c3911652d5effca4540d96ed92d85850a47d256ab0a2d728c0d1a298:2218c25f8ba70c82eba8ed6a321df209c0a7643d014f33bf9317846f62923830 2 0.0 65534 SatoshiLabs assets/vendor_satoshilabs.toif embed/firmware/vendorheader_sl.bin
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binctl: ## print info about binary files
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./tools/binctl $(BOOTLOADER_BUILD_DIR)/bootloader.bin
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@ -112,8 +112,8 @@ of 512 bytes.
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| 0x000D | 1 | vminor | version (minor) |
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| 0x000E | 1 | vsig_m | number of signatures needed to run the firmware from this vendor |
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| 0x000F | 1 | vsig_n | number of different pubkeys vendor provides for signing |
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| 0x0010 | 1 | vtrust | level of vendor trust (0-100) |
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| 0x0011 | 15 | reserved | not used yet (zeroed) |
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| 0x0010 | 2 | vtrust | level of vendor trust (bitmap) |
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| 0x0012 | 14 | reserved | not used yet (zeroed) |
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| 0x0020 | 32 | vpub1 | vendor pubkey 1 |
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| ... | ... | ... | ... |
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| ? | 32 | vpubn | vendor pubkey n |
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@ -125,6 +125,19 @@ of 512 bytes.
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| ? | 1 | sigmask | SatoshiLabs signature indexes (bitmap) |
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| ? | 64 | sig | SatoshiLabs aggregated signature of the vendor header |
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#### Vendor Trust
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Vendor trust is stored as bitmap where unset bit means the feature is active.
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| bit | hex | meaning |
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|-----|--------|-----------------------------------------|
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| 0 | 0x0001 | wait 1 second |
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| 1 | 0x0002 | wait 2 seconds |
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| 2 | 0x0004 | wait 4 seconds |
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| 3 | 0x0008 | wait 8 seconds |
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| 4 | 0x0010 | use red background instead of black one |
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| 5 | 0x0020 | require user click |
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### Firmware Header
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Total length of firmware header is always 1024 bytes.
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@ -89,9 +89,13 @@ void display_welcome(secbool firmware_present)
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#define VENDOR_IMAGE_RESX 120
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#define VENDOR_IMAGE_RESY 120
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void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len, uint32_t fw_version)
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void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len, uint32_t fw_version, char red_background)
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{
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display_clear();
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if (red_background) {
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display_bar(0, 0, DISPLAY_RESX, DISPLAY_RESY, COLOR_BL_RED);
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} else {
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display_clear();
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}
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if (memcmp(vimg, "TOIf", 4) != 0) {
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return;
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}
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@ -102,7 +106,7 @@ void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len, ui
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}
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uint32_t datalen = *(uint32_t *)(vimg + 8);
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display_image((DISPLAY_RESX - w) / 2, 32, w, h, vimg + 12, datalen);
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY - 48, vstr, vstr_len, FONT_BOLD, COLOR_WHITE, COLOR_BLACK);
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY - 48, vstr, vstr_len, FONT_BOLD, COLOR_WHITE, red_background ? COLOR_BL_RED : COLOR_BLACK);
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char ver_str[32];
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mini_snprintf(ver_str, sizeof(ver_str), "%d.%d.%d.%d",
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(int)(fw_version & 0xFF),
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@ -110,7 +114,7 @@ void display_vendor(const uint8_t *vimg, const char *vstr, uint32_t vstr_len, ui
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(int)((fw_version >> 16) & 0xFF),
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(int)((fw_version >> 24) & 0xFF)
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);
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY - 25, ver_str, -1, FONT_BOLD, COLOR_GRAY128, COLOR_BLACK);
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY - 25, ver_str, -1, FONT_BOLD, COLOR_GRAY128, red_background ? COLOR_BL_RED : COLOR_BLACK);
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display_refresh();
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}
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@ -339,14 +343,26 @@ int main(void)
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check_image_contents(&hdr, IMAGE_HEADER_SIZE + vhdr.hdrlen, sectors, 13),
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"invalid firmware hash");
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display_vendor(vhdr.vimg, (const char *)vhdr.vstr, vhdr.vstr_len, hdr.version);
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display_vendor(vhdr.vimg, (const char *)vhdr.vstr, vhdr.vstr_len, hdr.version, (vhdr.vtrust & 0x0010) == 0);
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display_fade(0, BACKLIGHT_NORMAL, 1000);
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if (vhdr.vtrust < 50) {
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY - 2, "click to continue ...", -1, FONT_BOLD, COLOR_GRAY64, COLOR_BLACK);
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touch_click();
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} else {
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if ((vhdr.vtrust & 0x0001) == 0) {
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hal_delay(1000);
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}
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if ((vhdr.vtrust & 0x0002) == 0) {
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hal_delay(2000);
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}
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if ((vhdr.vtrust & 0x0004) == 0) {
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hal_delay(4000);
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}
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if ((vhdr.vtrust & 0x0008) == 0) {
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hal_delay(8000);
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}
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if ((vhdr.vtrust & 0x0020) == 0) {
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display_text_center(DISPLAY_RESX / 2, DISPLAY_RESY - 2, "click to continue ...", -1, FONT_BOLD, COLOR_GRAY64, COLOR_BLACK);
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touch_click();
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}
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display_fade(BACKLIGHT_NORMAL, 0, 500);
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display_clear();
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@ -88,7 +88,7 @@ secbool load_vendor_header(const uint8_t * const data, uint8_t key_m, uint8_t ke
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memcpy(&vhdr->vsig_m, data + 14, 1);
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memcpy(&vhdr->vsig_n, data + 15, 1);
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memcpy(&vhdr->vtrust, data + 16, 1);
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memcpy(&vhdr->vtrust, data + 16, 2);
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if (vhdr->vsig_n > MAX_VENDOR_PUBLIC_KEYS) {
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return secfalse;
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@ -41,8 +41,8 @@ typedef struct {
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uint16_t version;
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uint8_t vsig_m;
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uint8_t vsig_n;
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uint8_t vtrust;
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// uint8_t reserved[15];
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uint16_t vtrust;
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// uint8_t reserved[14];
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const uint8_t *vpub[MAX_VENDOR_PUBLIC_KEYS];
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uint8_t vstr_len;
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const uint8_t *vstr;
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@ -146,7 +146,7 @@ class BootloaderImage(BinImage):
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class VendorHeader(object):
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def __init__(self, data):
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header = struct.unpack('<4sIIBBBBB', data[:17])
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header = struct.unpack('<4sIIBBBBH', data[:18])
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self.magic, \
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self.hdrlen, \
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self.expiry, \
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@ -189,7 +189,7 @@ class VendorHeader(object):
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print(' * expiry :', self.expiry)
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print(' * version : %d.%d' % (self.vmajor, self.vminor))
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print(' * scheme : %d out of %d' % (self.vsig_m, self.vsig_n))
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print(' * trust :', self.vtrust)
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print(' * trust :', self.vtrust, '=', bin(self.vtrust))
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for i in range(self.vsig_n):
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print(' * vpub #%d :' % (i + 1), binascii.hexlify(self.vpub[i]).decode())
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print(' * vstr :', self.vstr.decode())
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@ -199,11 +199,11 @@ class VendorHeader(object):
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print()
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def serialize_header(self, sig=True):
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header = struct.pack('<4sIIBBBBB',
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header = struct.pack('<4sIIBBBBH',
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self.magic, self.hdrlen, self.expiry,
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self.vmajor, self.vminor,
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self.vsig_m, self.vsig_n, self.vtrust)
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header += 15 * b'\x00'
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header += 14 * b'\x00'
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for i in range(self.vsig_n):
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header += self.vpub[i]
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header += struct.pack('<B', self.vstr_len) + self.vstr
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@ -37,8 +37,8 @@ def main():
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expiry = 0
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vheader = b'TRZV' + \
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struct.pack('<IIBBBBB', 0, expiry, vmajor, vminor, m, len(keys), vtrust)
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vheader += 15 * b'\0'
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struct.pack('<IIBBBBH', 0, expiry, vmajor, vminor, m, len(keys), vtrust)
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vheader += 14 * b'\0'
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for k in keys:
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vheader += k
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vheader += encode_vendor(vname) + open(ifn, 'rb').read()
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